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AI can write anything.
That’s the problem.

Mine leaves the pen in your hand. It reads what you wrote, spends a drop of ink, and asks the questions you were avoiding.

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You write. It stays quiet.

No autocomplete racing ahead of your cursor. No ghost text finishing your sentence in a voice that isn't yours. The page is empty because it's yours to fill.

When you pause, it reads.

A minute and a half of stillness — or ⌘J when you can't wait — and the pencil reads the draft. Four questions at most, and silence is a perfectly good answer.

It asks. It never writes.

A dotted line under two or three places, a question in the margin. Nothing is rewritten, nothing is pasted in. The next sentence is still yours to write.

“What does ‘better’ mean in this context, exactly? How do you measure success?”

Ink is finite.

Ten marks a day by default — tighten it in Settings, or give one draft a stricter cap. Spent ink stays spent. Scarcity is the feature: the pencil has to choose what's actually worth asking.

Then it reads your argument back.

The mirror types out what your draft actually claims — what carries, what thins. It doesn't fix anything. You decide what to do about it.

What Mine will never do

A tool is defined by what it refuses. This is the whole list, and it isn’t going to grow.

Write a sentence for you
Not a draft, not a closing line, not a “quick polish”.
Autocomplete your thought
No ghost text, no inline completion, no tab-to-accept.
Rewrite what you wrote
Marks live in the margin. Your prose is never edited in place.
Send more than you can see
Settings shows every word that leaves for your model. No hidden context, no telemetry on your prose.
Ink budget
Ten marks a day by default. Set it lower — unspent ink doesn't roll over.
Your model, your key
Bring your own Anthropic or OpenAI key. It's sealed with envelope encryption, and only ever spent on your drafts.
Plain Markdown out
Every draft exports as clean Markdown, marks appended at the end. No lock-in, no proprietary file.